Fork channel

Create a new channel as a copy of main.

Rename channel

Rename main to:

Delete channel

Delete main? This cannot be undone.

template-template-parm-decl.cpp
// RUN: %clang_cc1 -o - -emit-interface-stubs %s | FileCheck %s

// CHECK:      --- !ifs-v1
// CHECK-NEXT: IfsVersion: 3.0
// CHECK-NEXT: Target:
// CHECK-NEXT: Symbols:
// CHECK-NEXT: ...

template<template<typename...> class a> struct S6 { };